Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1993-12-21
1995-08-01
Dougherty, Thomas M.
Electrical generator or motor structure
Dynamoelectric
Linear
310 12, H02K 4102
Patent
active
054382270
ABSTRACT:
A linear pulse motor of the present invention comprises a stator core 10 having salient poles with teeth in the axial direction on the inner peripheral surface, stator windings W2 and W4 wound around each salient pole, and a mover which can move freely in the axial direction in the stator. The mover includes magnetic pole blocks 22 and 34 having teeth in the axial direction on the outer peripheral surface thereof and a permanent magnet 40 magnetized to a predetermined polarity. The aforesaid two magnetic pole blocks are arranged in an opposed relationship with respect to each salient pole via a circumferential gap. The magnetic pole block is magnetized to different polarity from each other by the permanent magnet disposed in the mover core. When the tooth tops of one magnetic pole block are opposed to the tooth tops of the salient pole, the tooth tops of the other magnetic pole block are opposed to the tooth bottoms of the salient pole. In the linear pulse motor of the present invention, the ampere-conductors can be increased, the magnetic circuit is uniform, multiple phases can be provided without increasing the length in the axial direction, and the length of mover in the axial direction can be made shorter than that of the stator.
REFERENCES:
patent: 5341054 (1994-08-01), Tal et al.
Dougherty Thomas M.
Jones Judson H.
Oriental Motor Co., Ltd.
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